Pump



March 17, 1931. c. MATTHEWS 1,795,935

. PUMP Filed Sept. '15, 1927 2 Sheets-'Sheet l u we' C/w Z is /3 f2 fifa; 2.

opening 2a Patented Mar. 17, 1931 News UNTED STATES PATENT GIFFICE LEE C. MATTHEWS, OF INGOT', CALIFORNIA PUMP Application filed September 15, 1927.

for raising the fluid.

Other objects and advantages of the invention will be apparent as the description proceeds,-reference being had to the accompanying drawings forming a part of this specification and which illustrate the now preferred form of the invention. It is to be understood however, that the structures shown may be modified considerably within the scope of the subject matter claimed.

In the drawings, wherein the same reference characters have been used to designate the same parts in all views,

' Figure 1 is a sectional view illustrating one form of the invention which includes a novel lever and link structure whereby the diaphragm operating rod will be moved in a straight line;

- Figure 2 is a top plan view of the ferm of the invention shown in Figure 1 angles to Figure 1;

through a well pipe and showing a further form of the invention;

Figure 5 is a vertical-sectional view of a further modied form of the invention. wherein the outlet pipe serves as a pump rod; and

Figure (i is a group perspective view of the Referring to Figures-1, 2 and B tlie chambered easing head 1, which is designed to be disposed at the mouth of the well is provided with a dome-like closure 2 having a central The dome-like closure 2 is bolted to the rim of the chambered casing 'i0 pump rod and link elements.

head, as indicated at 3 and between the rim of the casing head and the closure is conlined the flexible peripheral portion of a Y 5@ disk 4, which is preferably made of leather,

Figure 3 is a sectional view taken at right` Serial No. 219,700.

rubberized fabric material, (such as are used in automobile tire casings) or the like.

The pump rod 5 passes through the hole 2 in the closure 2 and'its threaded end eX- tends through a central hole in diaphragme. Apertured disks 6 are disposed on either side of the diaphragm 4, the pump rod 5 extend- Ving therethrough so that the shoulder 5 thereof engages the upper disk 6. The end of the pump rod is threadedl to receive a nut 7, suitable gaskets being provided to prevent leakage. l

- he pump rod 5 is operated by a hand lever 8, the end of which is pivoted as at 9 to a post 10 vwhich is bolted to casing `1 upon closure 2, a pair of the closure bolts 8 being availed of Afor this purpose. A link member 11 depends from lever 8,-being pivoted K thereto as indicated at 12,-the pivot pin 12 passing through a pair of spaced ears 11n which straddle the lever 8. The lower` half of the link 11 is forked, as indicated at 11b and each arm of the fork portion -11b .is connected-by a rivet or pin 13 to the bifurcated end of a` guide link llivhich is pivoted at 15 to an upstanding post 16 whiehis bolted to the casing 1 in the same manner as post 10. The upper end of the pumpl rod` 5 is pivoted upon pin 17 which is apertured (Fig. 6) inserted through the arms of the bifurcated portion 11b of the link 11. It is noted that pivot pin 17 is exactlymidway between pivot pins 12 and 13,-lilrewise that the distance from pivot pin 12 to pivot pin 13 is exactly equal to the distance between pivot pin 12 and pivot pin 9, which connects lever 8 to the post 10, B v reason of this structure,-take1i with the fact that the distance from pivot pin 13 to pivot pin 15 is equal to the distance between pivot pin 9 is believed to be self-evident. YWhen thelever 8 is `moved downwardly the diaphragm 4 assumes the dotted line positions of Figure 1 closing the valve 18 inthe inlet pipe 19, which is threaded into the bottom of .casing 1 and forcing the'air within the chambered casing out through the integral elbow 20 past the valve 21 and out through spout 22. Spout 22 has a flange base which is bolted as at 23 to the flange horizontal portion of the elbow 20. W'hen the lever 8 is moved upwardly and the diaphragm 4 again assumes the full line position theinlet valve 18 willv be opened and water will be drawn into the chambered casing 1 from the pipe 19. The next downward strokev of the lever 8 forces the water from the chambered casing 1 out through the spout 22 inan.

obvious manner. In case the outlet valve 21 is made of very light inaterialand is not absolutely leal; proof it may be necessary to hold a cup of water so as to submerge the outlet end of the spout 22 when the diaphragm is moved upwardly7 after itsinitial down stroke. By doing this sufficient water will be drawn into the spout 22 tohold the valve 21 closed. The operation of the pump thereafter is perfectly'satisfactory and` large volumes of water will be drawn up.

In the structure shown in Figure 4, the well casing is caused to function as the outlet pipe. An annulus 31 isfsecured at a point well below the mouth of the casing and in spaced relation to. a., partition 32, which has a central'opening 33 controlled by a flap valve 34. A clamp ring 35.is bolted to the annulus 31, as indicated at 36, and serves to confine the peripheral portion of. the eXible diaphragm 37 in place.v 'IheA diaphragm 37 has a central opening and to the upper surface of the diaphragm is pivoted a flap valve 38 for Closing the diaphragm opening 37% Ring-like plates 39, are bolted as at 41 to opposite sides of the diaphragm 37 sury rounding the opening 38. The ring-like plate 39 is provided with a substantially smaller opening than the plate 40 so as tol support the peripherial portion of the valve 38. Tie bolts 41 also serve to secure to the plate assembly the legs 42 of the socket member 43 into which is threadedfthe end of the pump rod 44. The legs 42 are spread laterally considerably s0 as toA leave plenty of room for the operation of the flap valve 38.

In the forni ofthe invention as disclosed in Figure 4 it is believed to be evide it that when the pump rod 44' is rcciprocated the diaphragm 37 willftale the same motion as previously described in. connection with Figure 1. On the down strole of the pump the valve 38 will open andair will be forced out of the chamber' between the valve and the partition 32. On the up stroke of' the pump rod 44 the inlet valve 34' will be opened and the chamber between the partition: and the` diaphragm will be filled with water; On

the down stroke of thev pump roditliie* valve 38j will again.V openl and" the water will bel delivered to a suitable spout or outlet pipe not shown.

A further modified form of the invention is disclosed in Figure 5. Here the pump rod 50 is made to serve as the outlet pipe tor the Water. In this form of the invention a chamberedicasing 51A is employed the saine as in Figures 1 to 3. `he inlet pipe is threaded into the central nipple 53 in the bottom of the chamber 51..-the inflow of water being controlled by a flap valve 54 secured to the bottom of the. chamber 51. lhe lower end of the tubular pump rod or outlet 50 is flanged, asindicated at 5G and rests upon the diaphragm 56 while an annular plate 55 disposedv beneath the diaphragm being boltedto the flange 50a. as indicated at 57. A flap valve 58 controls the flow of water through the outlet pipe pump vrod 50. Downward movement of the outlet pipe 50 serves to open valve 58 and exhaust the air from the chambered casing` 51. Upward movment of the outlet pipe 50 opens valve 54 and draws water into the chamber. Subsequent downward movement of the pipe 50 forces water up therethrough and past the valve 58. The diaphragm 56 is secured to the wall of the chambered casing 1 by means of a clamp ring 59.

Having thus described my invention, what I claim as new and desire t0 secure by Letters Patent is Operating mechanism for-a pump comprising a base, an upstanding post mounted on saidbase, an operating lever having one endpivoted to the upper end of said posts, a link having its upper end pivoted to said oper ating lever, a second post mounted on said base in diametrically opposed relation tothe first post. an arm having one end pivoted to". this second post and itsA othercnd pivoted to the lower end of said link, and a pump rod pivoted to said link at a point midway between the arm and lever, the distance on therlever bet veen the post and link pivotpoints being equal to the distance between the pivot connections of the arm withthe link and secondlpost whereby the pivot point of the pump rod will move in a straight line when the lever; is oscillated, said link being formed of a body biturcated at its-upper end to snugly engageV the operating lever and hifurcated at its lower end to snugly engage and limit the-movement of the pump-rod.y said pump rod being flattenedto tit in the bili-urcated lower-end of the-link.

In testimony whereot1 I afx my signature.

LEE C. MTTHEIVS'. 

